Module type Tick.LIFECYCLE

module type LIFECYCLE = sig .. end

The type for program life cycle events.

LIFECYCLE provides the ability to watch important events occuring in the life time of the program.

Events

type 'a event

The type for life cycle events with payloads of type 'a.

type watcher

The type for event watchers.

val watch : 'a event -> ('a -> unit) -> watcher

watch e f is a key-value watcher such that f is called whenever event e occurs.

val unwatch : watcher -> unit

unwatch w stops the watcher w. After that call it's callback is guaranteed not to be called again.

val poweron : unit event

poweron occurs shortly after the system powers up.

val poweroff : unit event

poweroff occurs shortly before the system is going to power off.

val suspend : unit event

suspend occurs shortly before the system is suspended.

val resume : unit event

resume occurs shortly after the system resumes after having been Tick.LIFECYCLE.suspended.